1066021212 has 24 divisors (see below), whose sum is σ = 2489200000. Its totient is φ = 355080816.

The previous prime is 1066021189. The next prime is 1066021217. The reversal of 1066021212 is 2121206601.

It is a super-2 number, since 2×1066021212² = 2272802448867897888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066021217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14962 + ... + 48537.

Almost surely, 2^1066021212 is an apocalyptic number.

1066021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1066021212 is an abundant number, since it is smaller than the sum of its proper divisors (1423178788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066021212 is a wasteful number, since it uses less digits than its factorization.

1066021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64905 (or 64903 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1066021212 is about 32649.9802756449. The cubic root of 1066021212 is about 1021.5397774416.

Adding to 1066021212 its reverse (2121206601), we get a palindrome (3187227813).

The spelling of 1066021212 in words is "one billion, sixty-six million, twenty-one thousand, two hundred twelve".